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Using a micro-UAV for ultra-high resolution multi-sensor observations of Antarctic moss beds

conference contribution
posted on 2023-05-23, 17:49 authored by Arko LucieerArko Lucieer, Robinson, S, Darren TurnerDarren Turner, Harwin, S, Kelcey, J
This study is the first to use an Unmanned Aerial Vehicle (UAV) for mapping moss beds in Antarctica. Mosses can be used as indicators for the regional effects of climate change. Mapping and monitoring their extent and health is therefore important. UAV aerial photography provides ultra-high resolution spatial data for this purpose. We developed a technique to extract an extremely dense 3D point cloud from overlapping UAV aerial photography based on structure from motion (SfM) algorithms. The combination of SfM and patch-based multi-view stereo image vision algorithms resulted in a 2 cm resolution digital terrain model (DTM). This detailed topographic information combined with vegetation indices derived from a 6-band multispectral sensor enabled the assessment of moss bed health. This novel UAV system has allowed us to map different environmental characteristics of the moss beds at ultra-high resolution providing us with a better understanding of these fragile Antarctic ecosystems. The paper provides details on the different UAV instruments and the image processing framework resulting in DEMs, vegetation indices, and terrain derivatives.

Funding

Australian Research Council

History

Publication title

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume 39-B1

Volume

39-B1

Editors

M Shortis, W Wagner, J Hyyppa

Pagination

429-433

Department/School

School of Geography, Planning and Spatial Sciences

Publisher

ISPRS

Place of publication

Australia

Event title

The 12th Congress of the International Society for Photogrammetry and Remote Sensing

Event Venue

Melbourne, Australia

Date of Event (Start Date)

2012-08-25

Date of Event (End Date)

2012-09-01

Repository Status

  • Restricted

Socio-economic Objectives

Assessment and management of coastal and estuarine ecosystems

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